1. Ubuntu is stable - you boot up and it works .
2. No anti-virus software required (THAT EATS YOUR SYSTEM RESOURCES )
3 Free and massive collection of software that you can install in 3 mouse clicks (or apt-get install if you prefer)
4. Updated freely be people who have not necessarily a financial gain involved .
5. It just works, no windows messages like " are you sure you want to install/run this software on your computer " bla bla .....every time you want to run some software that has not been approved by Microsoft !
6. It gets better (mostly) every six months , a new version is released with new features and enhancements (yes I know it is not always perfect !)
7. Its contributed to by hundreds of thousands of people all over the world !
8. You can customise just about everything you like to make it how you like it .
9. You don't have to pay ANYTHING to load another language !
10.ITS FREE ITS FREE ITS FREE ..I feel free and liberated using it and able to create and expand without the financial burdens of other software .

more to come later ....leave your comments if you dare...keep it positive and constructive ......please !